Shaun Marczak, PA-C
NPI 1275838146 · Physician Assistant · Eau Claire, WI
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Shaun Marczak, PA-C is a Physician Assistant provider in Eau Claire, WI (NPI 1275838146).
Provider details
- NPI number
- 1275838146
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- 2011001605 (MO)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
23 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 12 | $94 |
| Harvest of Vein Using an Endoscope33508 | 11 | $2 |
Typical Medicare-allowed amounts for these services range $2–$94 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (2)
- 733 W Clairemont AveEau Claire, WI 54701-6101Phone: (715) 838-5222
- 733 W Clairemont AveEau Claire, WI 54701-6101Phone: (715) 838-5222
Registry dates
- Enumerated
- 2011-01-24
- Last updated
- 2021-04-23
- Certified
- 2021-04-23
Frequently asked questions
- What is Shaun Marczak's NPI number?
- Shaun Marczak's National Provider Identifier (NPI) is 1275838146, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Shaun Marczak's specialty?
- Shaun Marczak is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Shaun Marczak located?
- Shaun Marczak's practice location on file with NPPES is 1400 Bellinger St, Eau Claire, WI 54703.
- What is Shaun Marczak's phone number?
- The practice phone number listed in the NPPES registry for Shaun Marczak is (715) 838-3311.
- Does Shaun Marczak accept Medicare?
- Shaun Marczak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Shaun Marczak's NPI active?
- Yes — Shaun Marczak's NPI (1275838146) is active in the NPPES registry as of the last update on 2021-04-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.